NGC 4169
| Galaxy NGC 4169 |
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|---|---|
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| The galaxies NGC 4169, NGC 4173, NGC 4174 and NGC 4175 (from right to left, NGC 4169 is at the bottom), recorded with a 60 cm telescope; together they form the HGC 61 . | |
| AladinLite | |
| Constellation | Berenike's hair |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 12 m 18.8 s |
| declination | + 29 ° 10 ′ 46 ″ |
| Appearance | |
| Morphological type | S0 / a / Sy2 |
| Brightness (visual) | 12.2 mag |
| Brightness (B-band) | 13.2 mag |
| Angular expansion | 1.8 'x 0.9' |
| Position angle | 153 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Affiliation | HGC 61 |
| Redshift | 0.012622 +/- 0.000060 |
| Radial velocity | (3784 +/- 18) km / s |
|
Stroke distance v rad / H 0 |
(169 ± 12) · 10 6 ly (51.8 ± 3.6) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | April 11, 1785 |
| Catalog names | |
| NGC 4169 • UGC 7202 • PGC 38892 • CGCG 158-041 • MCG + 05-29-032 • 2MASX J12121881 + 2910454 • HCG 61A • GC 2769 • H III 358 • h 1120 • LDCE 875 NED005 | |
NGC 4169 is a lenticular galaxy with an active nucleus of the Hubble type S0 in the constellation Haar der Berenike in the northern sky . It is estimated 169 million light years from the Milky Way and has a diameter of about 90,000 ly.
Together with NGC 4173 , NGC 4174 and NGC 4175 , it forms the Hickson Compact Group 61 ( The Box ).
The object was discovered on April 11, 1785 by the German-British astronomer William Herschel .
Web links
Commons : NGC 4169 - collection of images, videos, and audio files
- SIMBAD Astronomical Database
- www.starshadows.com Hickson Compact Group 61
- Spektrum.de : Amateur recordings [1]